[INFO] fetching crate difftastic 0.49.0...
[INFO] checking difftastic-0.49.0 against try#cde356bd79f103d9897ada6234862d1d3e511791 for pr-114586
[INFO] extracting crate difftastic 0.49.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate difftastic 0.49.0 on toolchain cde356bd79f103d9897ada6234862d1d3e511791
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate difftastic 0.49.0
[INFO] finished tweaking crates.io crate difftastic 0.49.0
[INFO] tweaked toml for crates.io crate difftastic 0.49.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate difftastic 0.49.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a794aa5c983fb35e02fc236d807630e6f52e3c0f8e28bd8809f4f37a08590f0c" "/opt/rustwide/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2f928a08dacc3c30df96d55e01ae84ea78807a18afff9a5609d036a6ef117c9
[INFO] running `Command { std: "docker" "start" "-a" "e2f928a08dacc3c30df96d55e01ae84ea78807a18afff9a5609d036a6ef117c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2f928a08dacc3c30df96d55e01ae84ea78807a18afff9a5609d036a6ef117c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2f928a08dacc3c30df96d55e01ae84ea78807a18afff9a5609d036a6ef117c9", kill_on_drop: false }`
[INFO] [stdout] e2f928a08dacc3c30df96d55e01ae84ea78807a18afff9a5609d036a6ef117c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a794aa5c983fb35e02fc236d807630e6f52e3c0f8e28bd8809f4f37a08590f0c" "/opt/rustwide/cargo-home/bin/cargo" "+cde356bd79f103d9897ada6234862d1d3e511791" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 871fef0ef704d3919d0be0b388cbb5fbb5832c23571489925aefde7e94437b6e
[INFO] running `Command { std: "docker" "start" "-a" "871fef0ef704d3919d0be0b388cbb5fbb5832c23571489925aefde7e94437b6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]    Compiling parking_lot_core v0.9.6
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking quick-error v1.2.3
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[INFO] [stderr]     Checking itertools v0.10.3
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[INFO] [stderr]    Compiling unicode-xid v0.2.3
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[INFO] [stderr]     Checking crossbeam-channel v0.5.4
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[INFO] [stderr]     Checking atty v0.2.14
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[INFO] [stderr]     Checking bumpalo v3.11.1
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[INFO] [stderr]     Checking const_format v0.2.23
[INFO] [stderr]     Checking mimalloc v0.1.28
[INFO] [stderr]     Checking tree_magic_mini v3.0.3
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking assert_cmd v2.0.5
[INFO] [stderr]    Compiling strum_macros v0.25.1
[INFO] [stderr]    Compiling difftastic v0.49.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parse/guess_language.rs:418:63
[INFO] [stdout]     |
[INFO] [stdout] 418 |         let lang = match mode_name.to_ascii_lowercase().trim().borrow() {
[INFO] [stdout]     |                                                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/parse/guess_language.rs:418:63
[INFO] [stdout]     |
[INFO] [stdout] 418 |         let lang = match mode_name.to_ascii_lowercase().trim().borrow() {
[INFO] [stdout]     |                                                               ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Borrow`, so calling `borrow` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.46s
[INFO] running `Command { std: "docker" "inspect" "871fef0ef704d3919d0be0b388cbb5fbb5832c23571489925aefde7e94437b6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871fef0ef704d3919d0be0b388cbb5fbb5832c23571489925aefde7e94437b6e", kill_on_drop: false }`
[INFO] [stdout] 871fef0ef704d3919d0be0b388cbb5fbb5832c23571489925aefde7e94437b6e